You would think that on-air personalities would constantly try to improve their command of English. Not so. I am stunned by the careless English from so many on-camera personalities. Epidemic is the illiterate wording, "If I would have known" or any variation of would haves that should be served by a had. Almost nobody on TV knows the difference between a podium and a lectern. Look them up. Half the newscasters say Semetic instead of the correct Semitic. And for some reason the words couldn't and didn't are treated worst of all with such mis-pronunciations as coon-nent and dint and dinnent.

Saying “If I would have known, … “ is bad grammar. It incorrectly uses the conditional (would have) when it should have used the subjunctive (had). It's a popular error, especially in New York media, but now spreading among all poorly-educated people.